GRA-CFS15H 21MHz Center-Loaded Carbon Fiber HF Antenna

The Power of Center-Loading Design

Unlike budget antennas using base loading, the GRA-CFS15H utilizes an advanced center-loaded structure for maximum performance on the 15m band:
  • 50% Higher Efficiency: Moves the high-current region upward, allowing both sections to radiate effectively for a significant signal boost.
  • Superior Stability: Offers wider bandwidth and maintains stable SWR during vehicle movement, regardless of mounting environment.
  • Premium Construction: Crafted with high-conductivity continuous woven carbon fiber for ultimate strength and reliability.

Optimized Radiation for 15-Meter Band

Efficiency is the most critical factor for HF mobile operation. Most antennas on the market suffer from poor radiation because the loading coil is placed at the base, trapping energy at the lowest point. The GRA-CFS15H solves this by positioning the coil in the center. This design ensures the upper section remains an active radiator, delivering performance that is closer to a full-size antenna and providing stronger field strength for your 21MHz communications.

Premium Continuous Carbon Fiber Construction

We utilize high-grade woven carbon cloth that is pressure-rolled into tubes.
  • Exceptional Conductivity: Our continuous fiber structure, treated with high-temperature carbonization, ensures a stable flow of electrons and consistent electrical contact.
  • Extreme Lightweight & Rigidity: Weighing only 402g, it offers incredible structural integrity to withstand wind resistance while being light enough to protect your vehicle mount.
  • Precision Engineering: Every section is precision-fitted to ensure seamless conductivity and mechanical strength, avoiding the breakage found in lower-quality alternatives.

  • Technical Specifications

    • Model: GRA-CFS15H
    • Design: Center Loading Coil
    • Material: High-Strength Continuous Woven Carbon Fiber
    • Frequency: 21MHz (15m Band)
    • VSWR: < 1.5
    • Power Handling: 120W
    • Impedance: 50Ω
    • Weight: 402g
    • Length: 197.5cm
    • Connector: M-Type (PL-259)

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